Walmart's 2.3 million employees work in retail or online operations in 24 countries and source materials from more than 100 countries. Effective management of human resources in such a diverse environment is an enormous task, and the key to success is reliable, accurate management information. Thus, Walmart developed an online human resources information system, which is a critical tool in managing its human resources. As expected, one of the broad goals of this system is to help management _______